Apparently, $100,000 in gold isn't worth what it used to be. A full month into the Gold Lock Hacker Challenge, the sample file has only been downloaded 1,000 times. And so the Israeli mobile security firm has upped the offer to $250,000.

"Since 2003, we have been telling everyone how our products provide unbreakable protection for their voice and data transmissions, but talk is cheap. So now we are putting our claims to the ultimate test by inviting anyone that thinks they have the skills to take us down," said Noam Copel, CEO of Gold Lock, in a statement. "I don't think there is a chance at all that I'll be giving away the gold. No individual, group or intelligence agency has the skills, technology or time needed to defeat our technology," he said.